So my question says for every $70 dollars Susan saves Jane saves $21. Then it asks if Susan saves a total of $90 how much would Jane have? If Jane saves a total of $252 how much would Susan save?

hence for $90 saving of Susan , Jane will be saving $27 (Answer)

(2)

if Jane saved $252 then let y is saving of Susan

70 : y::21:252

solving we get, 21y = 252*70

or, y = 252*70/21 = $ 840.

Answer : Susan Saving $840

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